Export citation

Export citation

Choose format for download:

Download Citation
  • Letter

Spectral evidence for unidirectional charge density wave in detwinned BaNi2As2

Yucheng Guo1,2, Mason Klemm1, Ji Seop Oh1,3, Yaofeng Xie1, Bing-Hua Lei4, Luca Moreschini3,5, Cheng Chen6, Ziqin Yue1,7, Sergey Gorovikov8 et al.

Tor Pedersen8, Matteo Michiardi9,10,11, Sergey Zhdanovich9,10, Andrea Damascelli9,10, Jonathan Denlinger2, Makoto Hashimoto12, Donghui Lu12, Chris Jozwiak2, Aaron Bostwick2, Eli Rotenberg2, Sung-Kwan Mo2, Rob G. Moore13, Junichiro Kono1,14,15,16, Robert J. Birgeneau3, David J. Singh4,17, Pengcheng Dai1, and Ming Yi1,*

  • 1Department of Physics and Astronomy, Rice University, Houston, Texas 77005, USA
  • 2Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
  • 3Department of Physics, University of California, Berkeley, California 94720, USA
  • 4Department of Physics and Astronomy, University of Missouri, Columbia, Missouri 65211, USA
  • 5Materials Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
  • 6Department of Physics, University of Oxford, Oxford OX1 3PU, United Kingdom
  • 7Applied Physics Graduate Program, Smalley-Curl Institute, Rice University, Houston, Texas 77005, USA
  • 8Canadian Light Source, Inc., 44 Innovation Boulevard, Saskatoon, SK S7N 2V3, Canada
  • 9Department of Physics and Astronomy, University of British Columbia, Vancouver, British Columbia V6T 1Z1, Canada
  • 10Quantum Matter Institute, University of British Columbia, Vancouver, British Columbia V6T 1Z4, Canada
  • 11Max Planck Institute for Chemical Physics of Solids, Nöthnitzer Straße 40, 01187 Dresden, Germany
  • 12Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
  • 13Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
  • 14Department of Electrical and Computer Engineering, Rice University, Houston, Texas 77005, USA
  • 15Smalley-Curl Institute, Rice University, Houston, Texas 77005, USA
  • 16Department of Materials Science and NanoEngineering, Rice University, Houston, Texas 77005, USA
  • 17Department of Chemistry, University of Missouri, Columbia, Missouri 65211, USA

  • *mingyi@rice.edu

Phys. Rev. B 108, L081104 – Published 8 August, 2023

DOI: https://doi.org/10.1103/PhysRevB.108.L081104

Abstract

In the iron-based superconductors, unconventional superconductivity emerges in proximity to intertwined electronic orders consisting of an electronic nematic order and a spin density wave (SDW). Recently, BaNi2As2, like its well-known iron-based analog BaFe2As2, has been discovered to host a symmetry-breaking structural transition but coupled to a unidirectional charge density wave (CDW) instead of SDW, providing a novel platform to study intertwined orders. Here, through a systematic angle-resolved photoemission spectroscopy study combined with a detwinning B1g uniaxial strain, we identify distinct spectral evidence of band evolution due to the structural transition as well as CDW-induced band folding. In contrast to the nematicity and spin density wave in BaFe2As2, the structural and CDW order parameters in BaNi2As2 are observed to be strongly coupled and do not separate in the presence of uniaxial strain. Furthermore, no nematic band splitting is resolved above the structural transition. Our measurements point to a likely lattice origin of the CDW order in BaNi2As2.

Physics Subject Headings (PhySH)

Authorization Required

We need you to provide your credentials before accessing this content.

Supplemental Material (Subscription Required)

References (Subscription Required)

Outline

Information

Sign In to Your Journals Account

Filter

Filter

Article Lookup

Enter a citation